Finding the Fourth Proportional to 1,086.52, 1,630.32 and 470.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.52 : 1,630.32 = 470.52 : x
2. Step 2: Convert to fraction form
   1,086.52/1,630.32 = 470.52/x
3. Step 3: Cross multiply
   1,086.52x = 1,630.32 × 470.52
4. Step 4: Simplify right side
   1,086.52x = 767,098.17
5. Step 5: Solve for x
   x = 767,098.17/1,086.52
6. Step 6: Final answer
   x = 706.01